ABB AC800M 3BSE053240R1 PM891 processor unit_Xiamen XingRuiJia Import and Export CO,LTD

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Model：ABB AC800M 3BSE053240R1 PM891 processor unit

Brand: ABB 2025-10-14
Price range (USD): 2000-4000
Country: Sweden
Parameter: PM891 / 3BSE053240R1 (also referred to as PM891K01)
High-performance 32-bit RISC processor
Integrated RAM, real-time clock, LED indicators, start button, and digital safety interface

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ABB AC800M PM891 (Order Code 3BSE053240R1) Overview

ABB AC800M 3BSE053240R1 PM891

Item	Details
Product Positioning	Core processor unit (CPU + Power + Terminal) of the AC800M series, responsible for executing control programs, processing I/O signals, and performing various control functions. It is a key component of the ABB 800xA distributed control system.
Model / Order Code	PM891 / 3BSE053240R1 (also referred to as PM891K01)
Main Functions	- High-performance 32-bit RISC processor - Integrated RAM, real-time clock, LED indicators, start button, and digital safety interface - Supports CPU redundancy and CEX-Bus redundancy to enhance system availability - Two RJ45 Ethernet ports (CN1, CN2) and one isolated serial port (COM4)
Communication Protocols	Supports Ethernet, Modbus, TCP/IP, PROFIBUS, CANopen, and other industrial communication standards
I/O Interfaces	16 digital inputs and 24 digital outputs (some documentation lists 24 inputs / 16 outputs)
Power Supply	Input voltage 24 V DC (some sources specify 110-240 V AC → 24 V DC output); rated power approx. 40 W; supports 1+1 redundant power configuration
Operating Environment	Temperature range –25 °C to +70 °C; protection class IP20 (some sources state IP65)
Dimensions & Weight	Approx. 280 mm × 105 mm × 245 mm; weight about 2 kg (other configurations 1 kg or 4 kg depending on setup)
Applications	Process automation in petrochemical, energy, power, water treatment, pharmaceutical, food processing, textile, metallurgy, rail transit, and manufacturing industries
Key Advantages	- Modular and scalable design for easy maintenance and upgrades - Redundant architecture eliminates single-point failures for high availability - Rich function-block library (advanced control, auto-tuning, drive/motor integration) - Flexible combination of multiple field I/O and communication modules

Summary

The ABB AC800M PM891 (3BSE053240R1) is a high-reliability processor unit designed for large-scale process control systems. It integrates CPU, power supply, and terminal functions within a single housing, offering strong industrial-grade electromagnetic interference resistance and comprehensive redundancy features to ensure continuous operation in harsh environments.

Through standardized Ethernet and serial interfaces, the PM891 easily connects to fieldbuses or supervisory systems for data acquisition, process monitoring, and closed-loop control. Its modular architecture allows users to flexibly expand I/O, communication, or function modules as needed, making it widely used in critical automation sectors such as petrochemical, energy, power generation, water management, and pharmaceuticals.